Cloudbridge Mattermost is a WordPress plugin that provides integration between WordPress and Mattermost.
Cloudbridge Mattermost 2.1.0 has been released with fixes and new features!
New features include support for Cloudflare and verified WordPress 5.8 compatibility.
You can read more about it here: code.webbplatsen.net/wordpress/cloudbridge-mattermost. It is available via the WordPress plugin repository and from GitHub